The Stack Testing & Sampling program provides statewide oversight of compliance and quality assurance activities relating to stack emission testing performed in Michigan as required by permit conditions or state and federal regulations. Staff assure proper sampling, analytical methods and calculations are used to produce accurate air emission data to determine compliance.

Specific activities include assisting facilities in siting sampling ports, conducting reviews and approvals of stack test protocols, on-site observation of source sampling testing and review and approval of final emission test reports.